Alternating rotary gearing.



FRANK B. TYSON, OF RANDOLPH, KANSAS.

ALTERNATING ROTARY GEARIN G.

Specification of Letters Patent.

Patented Jan. '7, 1908.

Application filed August 21. 1907. Serial No. 389.491.

To all whomit may-concern:

Be it known that I, FRANK B. TYsoN, citi- Zen of the United States, residing at Randolph, in the county of Riley and State of Kansas, have invented certain new and useful Improvements in Alternating Rotary Gearing, of which the following is a specilication.

My invention relates to alternating rotary gearing, and belongs to that class of mechanisms ordinarily employed in connection with washing machines or churns, in which by means of certain associated toothed wheels and other coacting elements a shaft is retated first in one direction and then in the opposite direction, the driving shaft of the apparatus being always revolw ed in one and the same direction.

My invention belongs immediately with those contrivances in the class stated which include a frame provided with a rack, the frame and rack rising and falling above and below a suitable drivmg pinion engaging the rack, and back and forth horizontally as the pinion revolves.

The object of my invention consists in the special construction and arrangement of the parts by which the driven shaft is rotated and reversed, as shown in the accompanying drawings, and it is believed that the labor called for in the operation is materially lessened below that required by such gearing previously used with which I am acquainted.

Figure 1 of the drawings represents a side view. Fig. 2 is a Vertical section lengthwise, and Fig. 3 is a top plan view with portions broken away to disclose underlying parts.

Like reference letters are used to designate the same parts throughout the description and drawings.

Upon a suitable base A is supported the bearing B for the driving shaft 0 which carries the driving pinion'D. One end a of the driving shaft projects somewhat beyond the pinion D as illustrated,

The operating frame or rack frame E, having the rack e, as best shown in Fig. 3 is adapted to oscillate vertically and horizontal y.

The letter F refers to the stops secured on opposite sides of the frame E by the bolts f. The stops F will be again mentioned. The rack frame is pivotally connected at the right hand side as shown on the drawings with an inner frame G by means of the pivot bolt g. The inner frame G does not vibrate vertically, but, is arranged to revolve in a horizontal direction in contact with the balls H. The run-way for the balls is provided, as best shown in Fig. 2, in part by a llange of inner frame G and by the stationary disk J and annular flange pieces The disk is secured as illustrated to the stool a that rises from and, ordinarily, is integrally formed with the base A. To the lower edge of the inner frame is secured the half-circular rack K, that engages the pinion IU on the vertical or driven shaft L. That shaft is shown in Figs. 1 and 2.

The remaining elements of my invention are best described. in connection with the explanation of the mode of operation. As

the driving shaft C is turned, the pinion l) engaging rack e turns the frame E, and, consequently, the frame G also, about the stationary disk J as a center. when the pinion has reached the end of the rack the end 0 of the shaft (1 encounters the curved guidingstop F, as explained likewise in Patent No. 844,761 of the United States, issued to me February 19, 1907, and the pinion cannot become disengaged from the rack e, which is, therefore, thrownup and begins a contrary movement above the pinion D. The stop M limits the upward and downward play of the rack frame E, and the side play of that frame with respect to the inner frame G is similarly limited by the vertical stops N borne by frame G. As the rack e passes over the pinion its end is reached and it falls into its original position in which it passes again below the pinion. It is my practice to prevent the hard fall of rack frame E by introducing the spiral spring 0 around the pivot bolt gin such manner that a portion of the weight of the rack frame is taken up by the spring. The drop of the rack frame is thus 111 a degree cushioned. As the rack frame and inner frame are operated back and forth, the pinion 7c and driven shaft L are rotated correspondingly.

Having now described the construction of my invention, and explained the mode of its operation, what I claim is 1. In alternating rotary gearing, the combination with a stationary disk, of an inner frame supported upon the said disk and adapted to revolve about the disk as a center, a rack frame pivotally connected with the said inner frame, a driving shaft, a driving pinion on the driving shaft arranged to engage the rack of the said rack frame, means for limiting the movements of the rack frame borne by the saidinner frame, and a. driven.

- shaft and pinion engaging the said rack on" the said inner frame, substantially as dascribed.

2.. In alternating rotary gearing, the combination with a stationary disk, of an inner frame adapted to revolve about the disk as a center, balls interposed between the said inner frame and the stationary disk, a rack frame pivotally connected-With the said inner frame, a driving shaft, a driving pinion on t-hedriving shaft arranged to engage therackof the said rack frame, means for limiting the movements of the rack frame with respect'to said driving pinion, a rack borne by the said inner frame, and a driven shaft and pinion engaging the said rack on the said inner frame substantially as described.

3. In alternating rotary gearing, the combination with a stationary disk, of an inner frame. supported upon the said disk and adapted" to revolve about the said disk as a center, a: rack frame pivotallyconnect-ed with the said innerframe, aspring arranged to pressupwardly against the said rack frame, a driving'shaft, adriving pinion on the said driving shaft arranged to engage the rack of the said rack frame, meansforlimiting the movements of the said rack framewith respectto the said driving pinion, a rack borne by the said inner frame, and a driven shaft andpi'nion engagingthe said rack on the said inner frame,v substantially as described.

4. In alternating rotary gearing, the combination with a stationary disk, of an inner frame supported upon the said disk and adapted to revolve about the disk as a center a rack frame pivotally connected with the said inner frame, a spring: arranged to press upwardly against the said rack frame, a driving pinion, a driving shaft having one end extending beyond said. pinion, the driving pinion being arranged to engage the rack of the said rack: frame, curved guiding-stops attached to the said rack frame and disposed to encounter the extended end of said drivingshaft, a stop attached to said inner frame and disposed to limit the up and down movements of the-said rack frame, a rack-borne by the said inner frame, anda driven shaft and pinion engaging the said rack on the saidinner frame, substantially as described.

In testimony whereof I affix mysignature in presence of'twowitnesses.

. FRANK B. TYSON.

Witnesses:

C. A. RoBEnTs, A. T. FINLEY. 

